Deuteronomy 30:9-10

The LORD your God will make you successful in everything you do. You will have many children, your cattle will have many calves, and your fields will produce good crops, because the LORD will again be happy with you, just as he was with your ancestors. But you must obey the LORD your God by keeping all his commands and rules that are written in this Book of the Teachings. You must return to the LORD your God with your whole being.